add jax and henning to contributors
add jax and henning to contributors

hgschmie/jdbi,stevenschlansker/jdbi,zanebenefits/jdbi,voidifremoved/jdbi,john9x/jdbi,kentyeh/jdbi,voidifremoved/jdbi,kentyeh/jdbi,HubSpot/jdbi,BernhardBln/jdbi,stevenschlansker/jdbi,11xor6/jdbi,fengshao0907/jdbi,john9x/jdbi,omidp/jdbi,11xor6/jdbi,zanebenefits/jdbi,jdbi/jdbi,hgschmie/jdbi,christophercurrie/jdbi,pennello/jdbi,jdbi/jdbi,hgschmie/jdbi,jdbi/jdbi,BernhardBln/jdbi,christophercurrie/jdbi,HubSpot/jdbi,pennello/jdbi,fengshao0907/jdbi,omidp/jdbi